Sorry for the longer than usual delay. Unfortunately, I would expect a similar delay for chapter 10 (i.e. probably not until end of May or so). There's only 3.5 chapters left (10, 11, 12, 12.5).
JNC has printed light novels before, but it seems like it's only if they get enough sales. And this series in particular would be hard because it's full color. That said, malding about it instead of supporting the actual author/publisher won't change that.
I am absolutely committed to seeing this through, it's just that real life has taken over for both me and the redrawer. I have half of ch3 TL'd and the ch3 redraws are also in progress, so hopefully it won't take me 4 months this time.
I noted this on Reddit, but for the benefit of everyone here, I don't plan to have Ch. 2 back out until May at least. (Sorry, I've had very little time these days to translate and these chapters are longer + I have to wait for the cleaner to get back to me.) I do plan to translate all 12...
Unless someone magically finds and scans one of the few copies floating around in Japan, we won't ever see the final part of this series, no. There's 4 pages you can preview on the author's Booth page.
FWIW, I'd appreciate it if anyone wants to either re-upload this on other sites or advertise it around Reddit/etc. I don't really have those accounts + the original got attention that so far the sequel doesn't.
There's an R-18 sequel to the sequel ("Toshishita no Senpai-chan AFTER"): https://nametake0413.booth.pm/items/1543495
However it was a limited physical release so it's unlikely we'll ever get raws.